The Digital Body Electronic Scale with wide handle for easier carrying or storage

What Types of Scales Are There to Measure Weight?

A weighing scale is an instrument used for measuring the mass or weight of an object. These devices can be mechanical or electronic. In most cases, scales measure the weight of the object, that is, the force with which the earth is pulling the object towards its center. Mass, on the other hand, is the amount of matter in the body. However, since the weight and mass of a body are proportional, scales are usually calibrated to give output in mass units

Center Beam Balance: This is the oldest known weight measuring device and one of the most accurate. This simple device consists of two pans attached to the opposite ends of a lever supported by a fulcrum in the center. The weight to be measured is placed in one of the pans and known standard weights in the other until a balance is achieved. This balance is indicated by the leveling of both pans with the lever being horizontal. The unknown weight is then calculated by simply summing up the known weights used.

Off-center Beam Balance: This is a more sophisticated balance involving a lever with a fulcrum quite close to one end rather than in the center of the beam. A pan is attached to the end close to the fulcrum, and usually a single slide of known weight is on the section of the lever on the other side of the fulcrum. This scale uses the principle of moments to calculate the unknown weight using the known. When in equilibrium, the product of both the weights with their respective perpendicular distances from the fulcrum--called their moments--are the same. This balance thus requires a little technical background on moments.

Hanging Spring Scale: Often seen in produce stores, these scales consist of a spring enclosed in a frame, and a hook attached to one of its ends to suspend the weight to be measured. Whenever a spring is stretched, its extension is proportional to the force applied, which is the unknown weight in this case. The frame is calibrated using known weights to show the weight measurement depending on the stretched length of the spring. Although widely used for measuring mass, these scales measure weight and can be used to calculate differences in earth's gravitational force at different heights above sea level. A limitation of these scales is a confined range of weights measurable by the device.

Bathroom Scales: This device is most commonly used to measure the mass of human beings, often misquoted as their weight. These are nearly identical to the hanging spring balance in the physics principle used, but calculations are based on a spring's compression rather than extension. The spring's compression is proportional to the force compressing it--the weight of the person standing on it. These instruments have limitations similar to those of the hanging spring scale and are similarly affected by the force of gravity, which varies depending on elevation above sea level. The spring can also lose its calibration and become compressed permanently if used by a person weighing more than the maximum range.

Digital Scales: Commonly used as shelf-top scales with a digital output, these electronic measuring devices are also based on the spring scale but employ the use of an electrical strain gauge to measure the deflection of the beam which supports the unknown weight. These devices are highly accurate and can be used for measuring small weights, as in bits of jewelry, or large weights, such as heavy trucks, depending on the strain gauge used

Operation of Digital Bathroom Scales

One of the most basic parts of any weight-loss program -- the weigh-in -- can also be one of the more frustrating. Traditional bathroom scales, with their rotating disks of numbers moving in response to pressure from springs, can wear down and deliver inaccurate readings over time. Reading analog scales can also be a headache, as they print weight readings on a large disk that moves as your weight shifts on the scale. Digital scales are easy to operate, and some offer advanced features

Install batteries in the scale if it requires them, or plug the scale in. Most digital bathroom scales use batteries to allow them to be moved around; these may be watch batteries, AAAs or AAs, depending on the model. Without a power source, the scale will not function

Read the manual for the digital scale. Some have additional features such as body-mass index calculators, weight tracking and wireless capabilities. The instruction manual will indicate how to set these up

Turn on your computer and connect a wireless Internet antenna if your scale has wireless capabilities. If your computer doesn't have an antenna, they area available at any computer store

Install any software that came with the scale; this will import the data from your weigh-ins to your computer for you to analyze

Step onto the scale. Keep your feet slightly apart and be sure not to touch or hold onto railings or counters because that can distort the scale's reading. Digital scales, unlike mechanical ones, do not normally have to be "zeroed" before standing on them

Look at the digital readout to see your weight. If it doesn't appear immediately, wait a few seconds. Many digital scales take a moment to average out the slight fluctuations in weight that occur as you move

How to Read a Body Scale

While weight is the most common measure for fat loss, a device known as a body fat scale allows for body fat to be estimated quickly and in the privacy of your own home. This device utilizes a harmless electric current that travels through the body.Other fat measure techniques require a doctor's appointment or the assistance of a second person. Learning how to interpret the information a fat scale produces is essential for understanding the implications of fat on your body

Determine overall weight using a normal scale. Step on the scale and give it enough time to calculate weight. Record the weight measurement

Find the overall body fat percentage using a body fat scale. Many body fat scales can also determine weight, which would make the previous step unnecessary. Step onto the body fat scale and allow it to register body fat percentage

Multiply the percentage of body fat the scale indicates by total weight

Calculate BMI (Body Mass Index) by dividing weight by the square root of height in inches, and then multiplying this number by 703. Those with a BMI below 25 are considered healthy while those with a BMI over 30 are considered obese

Throw away the notion that body fat scales are 100 percent accurate. Understand that the main advantages of a body fat scale are the ability to track your fat loss and the freedom to measure your body fat independently. Do not rely too heavily on these device due to variables that can affect the reading, such as hydration

Tips & Warnings:

Measure yourself after exercising and drinking a glass of water; this makes the reading much more consistent

Everyone has a different body structure. Healthy body fat percentage may differ due to this variability

According to Fit Day, "more than 26 percent body fat for men or 32% body fat for women is considered obese." A man should never have a body fat percentage below 2% or 10% for a woman

There have been reports of the electrical signal used to measure body fat interrupting the normal function of personal electronic devices such as pace makers. Consult your doctor before use

Package Included:

1 x Efficiency Energy Electronic Glass Scale

General

Model

EB9005L

Spec

Condition

New

Type

Glass Scale

Material

Glass

Dimension

330 x 41mm / 13.0 x 1.6in (L x W)

Power Source

Power Source

1 x CR2032 button battery

Battery Type

CR2032

Features

Features

This electronic body fat digital scale is a device using the difference of electrical conductive property of body fat from other tissues to measure the relative body fat percentage content in one's body

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weight is 1852 Gram

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